package com.nine.web.controller.common;

import com.nine.common.config.RuoYiConfig;
import com.nine.common.constant.Constants;
import com.nine.common.core.domain.AjaxResult;
import com.nine.common.utils.SecurityUtils;
import com.nine.common.utils.StringUtils;
import com.nine.common.utils.file.FileUploadUtils;
import com.nine.common.utils.file.FileUtils;
import com.nine.framework.config.ServerConfig;
import com.nine.framework.config.properties.MinioProperties;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import lombok.Cleanup;
import org.dromara.x.file.storage.core.FileInfo;
import org.dromara.x.file.storage.core.FileStorageProperties;
import org.dromara.x.file.storage.core.FileStorageService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController {
	private static final Logger log = LoggerFactory.getLogger(CommonController.class);

	@Autowired
	private ServerConfig serverConfig;

	@Autowired
	private FileStorageService fileStorageService;

	@Autowired
	private MinioClient minioClient;

	@Autowired
	private MinioProperties minioProperties;

	private static final String FILE_DELIMETER = ",";

	/**
	 * 通用下载请求
	 *
	 * @param fileName 文件名称
	 * @param delete   是否删除
	 */
	@GetMapping("/download")
	public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
		try {
			if (!FileUtils.checkAllowDownload(fileName)) {
				throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
			}
			String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
			String filePath = RuoYiConfig.getDownloadPath() + fileName;

			response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
			FileUtils.setAttachmentResponseHeader(response, realFileName);
			FileUtils.writeBytes(filePath, response.getOutputStream());
			if (delete) {
				FileUtils.deleteFile(filePath);
			}
		}
		catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}

	/**
	 * TODO x-file-storage 方式进行下载
	 * @param fileName
	 * @param delete
	 * @param response
	 */
	@GetMapping("/download/storage")
	public void fileDownloadStorage(String fileName, Boolean delete, HttpServletResponse response) {
		try {

		}
		catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}

	/**
	 * 通用上传请求（单个）
	 */
	@PostMapping("/upload")
	public AjaxResult uploadFile(MultipartFile file) throws Exception {
		try {

			FileStorageProperties properties = fileStorageService.getProperties();
			System.out.println("properties = " + properties);
			String prefixPath = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy/MM/dd")) + "/";
			FileInfo fileInfo = fileStorageService.of(file)
					// 保存到相对路径下，不需要可以不写
					.setPath(prefixPath)
					// 设置保存的文件名，不需要可以不写，会随机生成
					.setSaveFilename(UUID.randomUUID().toString() + "--" + file.getOriginalFilename())
					// 设置文件类型，不需要可以不写
					.setContentType(file.getContentType())
					// 关联对象id，为了方便管理，不需要可以不写
					.setObjectId(SecurityUtils.getUserId())
					// 保存一些属性，可以在切面、保存上传记录、自定义存储平台等地方获取使用，不需要可以不写
					.putAttr("remark", "备注测试信息")
					// 将文件上传到对应位置
					.upload();
			System.out.println("fileInfo = " + fileInfo.toString());
			AjaxResult ajax = AjaxResult.success();
			ajax.put("url", fileInfo.getUrl());
			// 这边的值，需要改为URL，前端会做判断，如果是http开头的，就不做拼接
			ajax.put("fileName", fileInfo.getUrl());
			ajax.put("newFileName", fileInfo.getUrl());
			ajax.put("originalFilename", file.getOriginalFilename());
			return ajax;
		}
		catch (Exception e) {
			e.printStackTrace();
			return AjaxResult.error(e.getMessage());
		}
	}

	/**
	 * 通用上传请求（整合minio，已经过测试）
	 */
	@PostMapping("/upload/v2")
	public AjaxResult uploadFileWithMinio(MultipartFile file) throws Exception {
		try {
			// 输入流需要关闭，使用 @Cleanup 注解，否则会报异常。
			@Cleanup InputStream inputStream = file.getInputStream();
			minioClient.putObject(PutObjectArgs.builder()
					// 存储桶名称
					.bucket(minioProperties.getBucketName())
					// 文件名称
					.object(file.getOriginalFilename())
					// 文件流
					.stream(inputStream, file.getSize(), -1).build());
			String url = getMinioFileUrl(null, file.getOriginalFilename());
			AjaxResult ajax = AjaxResult.success();
			ajax.put("url", url);
			ajax.put("fileName", url);
			ajax.put("newFileName", url);
			ajax.put("originalFilename", file.getOriginalFilename());
			return ajax;
		}
		catch (Exception e) {
			e.printStackTrace();
			return AjaxResult.error(e.getMessage());
		}
	}

	/**
	 * 原上传接口，本地存储
	 *
	 * @param file
	 * @return
	 * @throws Exception
	 */
	@PostMapping("/upload/v1")
	public AjaxResult uploadFileV1(MultipartFile file) throws Exception {
		try {
			// 上传文件路径
			String filePath = RuoYiConfig.getUploadPath();
			// 上传并返回新文件名称
			String fileName = FileUploadUtils.upload(filePath, file);
			String url = serverConfig.getUrl() + fileName;
			AjaxResult ajax = AjaxResult.success();
			ajax.put("url", url);
			ajax.put("fileName", fileName);
			ajax.put("newFileName", FileUtils.getName(fileName));
			ajax.put("originalFilename", file.getOriginalFilename());
			return ajax;
		}
		catch (Exception e) {
			return AjaxResult.error(e.getMessage());
		}
	}

	/**
	 * 通用上传请求（多个）
	 */
	@PostMapping("/uploads")
	public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception {
		try {
			// 上传文件路径
			String filePath = RuoYiConfig.getUploadPath();
			List<String> urls = new ArrayList<String>();
			List<String> fileNames = new ArrayList<String>();
			List<String> newFileNames = new ArrayList<String>();
			List<String> originalFilenames = new ArrayList<String>();
			for (MultipartFile file : files) {
				// 上传并返回新文件名称
				String fileName = FileUploadUtils.upload(filePath, file);
				String url = serverConfig.getUrl() + fileName;
				urls.add(url);
				fileNames.add(fileName);
				newFileNames.add(FileUtils.getName(fileName));
				originalFilenames.add(file.getOriginalFilename());
			}
			AjaxResult ajax = AjaxResult.success();
			ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
			ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
			ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
			ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
			return ajax;
		}
		catch (Exception e) {
			return AjaxResult.error(e.getMessage());
		}
	}

	/**
	 * 本地资源通用下载
	 */
	@GetMapping("/download/resource")
	public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response) throws Exception {
		try {
			if (!FileUtils.checkAllowDownload(resource)) {
				throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
			}
			// 本地资源路径
			String localPath = RuoYiConfig.getProfile();
			// 数据库资源地址
			String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
			// 下载名称
			String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
			response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
			FileUtils.setAttachmentResponseHeader(response, downloadName);
			FileUtils.writeBytes(downloadPath, response.getOutputStream());
		}
		catch (Exception e) {
			log.error("下载文件失败", e);
		}
	}


	/**
	 * 获取文件的路径
	 *
	 * @param bucketName 不传就默认配置的bucketName
	 * @param fileName
	 * @return
	 */
	private String getMinioFileUrl(String bucketName, String fileName) {
		if (!StringUtils.hasText(bucketName)) {
			bucketName = minioProperties.getBucketName();
		}
		return minioProperties.getEndPoint() + "/" + bucketName + "/" + fileName;
	}
}
